[Qemu-devel] [PATCH 1/4] usbnet: Add missing usb_wakeup() call in usbnet_receive()

[Michael Brown <mcb30@ipxe.org>]

usbnet_receive() does not currently wake up the USB endpoint, leading
to a dead RX datapath when used with a host controller such as xHCI
that relies on being woken up.

Fix by adding a call to usb_wakeup() at the end of usbnet_receive().

Signed-off-by: Michael Brown <mcb30@ipxe.org>
---
 hw/usb/dev-network.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hw/usb/dev-network.c b/hw/usb/dev-network.c
index 985a629..cf2c641 100644
--- a/hw/usb/dev-network.c
+++ b/hw/usb/dev-network.c
@@ -642,6 +642,7 @@ typedef struct USBNetState {
     uint8_t in_buf[2048];
 
     USBEndpoint *intr;
+    USBEndpoint *bulk_in;
 
     char usbstring_mac[13];
     NICState *nic;
@@ -1311,6 +1312,7 @@ static ssize_t usbnet_receive(NetClientState *nc, const uint8_t *buf, size_t siz
     memcpy(in_buf, buf, size);
     s->in_len = total_size;
     s->in_ptr = 0;
+    usb_wakeup(s->bulk_in, 0);
     return size;
 }
 
@@ -1353,6 +1355,7 @@ static void usb_net_realize(USBDevice *dev, Error **errrp)
     s->filter = 0;
     s->vendorid = 0x1234;
     s->intr = usb_ep_get(dev, USB_TOKEN_IN, 1);
+    s->bulk_in = usb_ep_get(dev, USB_TOKEN_IN, 2);
 
     qemu_macaddr_default_if_unset(&s->conf.macaddr);
     s->nic = qemu_new_nic(&net_usbnet_info, &s->conf,
-- 
2.3.8